Actually Glenn, that's such a good idea that my club is doing it (the .22 match). The USPSA Match Director is going to set up a .22 only match coming up later this year, specifically because of ammo prices.
As far as the "headshot" match, at our IDPA matches, we've been running a lot more 6 round courses of fire lately, as opposed to the 12 and 18 round courses. Sure, the 18 rounders are more fun, but ammo isn't cheap.
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